SoundTouch resampler integration

Utilities/simple_ringbuf.cpp

@@ -33,7 +33,7 @@ simple_ringbuf& simple_ringbuf::operator=(simple_ringbuf&& other)
 	return *this;
 }
 
-u32 simple_ringbuf::get_free_size()
+u32 simple_ringbuf::get_free_size() const
 {
 	const u64 _rw_ptr = rw_ptr;
 	const u32 rd = static_cast<u32>(_rw_ptr);
@@ -42,12 +42,12 @@ u32 simple_ringbuf::get_free_size()
 	return wr >= rd ? buf_size - 1 - (wr - rd) : rd - wr - 1U;
 }
 
-u32 simple_ringbuf::get_used_size()
+u32 simple_ringbuf::get_used_size() const
 {
 	return buf_size - 1 - get_free_size();
 }
 
-u32 simple_ringbuf::get_total_size()
+u32 simple_ringbuf::get_total_size() const
 {
 	return buf_size;
 }

Utilities/simple_ringbuf.h

@@ -25,9 +25,9 @@ public:
 	simple_ringbuf(simple_ringbuf&& other);
 	simple_ringbuf& operator=(simple_ringbuf&& other);
 
-	u32 get_free_size();
-	u32 get_used_size();
-	u32 get_total_size();
+	u32 get_free_size() const;
+	u32 get_used_size() const;
+	u32 get_total_size() const;
 
 	// Thread unsafe functions.
 	void set_buf_size(u32 size);